简化的Wigner分布及其在笔迹鉴别中的应用

本文提出了简化的Ｗｉｇｎｅｒ分布纹理分析方法并用于笔迹鉴别．Ｗｉｇｎｅｒ分布是图像的局部频谱表示，但计算量和存储量太大，我们证明Ｗｉｇｎｅｒ分布是信号的冗余表示，然后对它进行了简化．简化的Ｗｉｇｎｅｒ分布是信息保持的，且仍保持较好的纹理度量性能．该方法在笔迹鉴别实验中比以往的笔迹纹理分析方法取得了更好的结果。

MODIFIED WIGNER DISTRIBUTION AND APPLICATION TO WRITER IDENTIFICATION

In this paper, a simplified Wigner distribution is proposed and applied to writer identification (WI). Wigner distribution represents the local spectrum of image but is expensive in computation and storage. It is proved that Wigner distribution is redundant and then its representation is simplified. The simplified Wigner distribution is information-preserving and still powerful in texture measuring. Experiments of WI show that this method is better than previous handwriting textural methods.